I have,as far as rockets go:
1-1.9" Arreaux
1-2.6" Initiator
1-2.6" HV Arcas
as well as numerouse small LPR estes rockets.

Please give me some pointers, do's and don'ts of building a sled.
I did attempt one but it weighs WAY TOO MUCH(more than the Initiator).
Could I just build a simple bubble wrapped sled and throw it down the upper tube to the bulkhead? I know I'll have to drill a couple of holes to get altitude.
I'll probably have to secure it with 3-4 plastic rivets so I dont lose it out the nose, if it should come loose.

Any helpful tidbits would be awesome. Pics would be great.
Thanks
Topper